/****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
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 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
 **     of its contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
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 ****************************************************************************/

#ifndef WAVFILE_H
#define WAVFILE_H

#include <QObject>
#include <QIODevice>
#include <QAudioFormat>
#include <QAudioOutput>

 class WavFile : public QObject
 {
    Q_OBJECT
 public:
     WavFile(QObject *parent = 0);

     virtual ~WavFile();

     void setWaveDevice(QIODevice *waveDevice);

     const QAudioFormat &fileFormat() const;
     qint64 headerLength() const;

 signals:
     void rmsLevelChanged(int level);
     void peakDetected();
     void error(QString);

public slots:
     void play();
     void stop();
     void onPeakThresholdChanged(int threshold);
     void onVolumeChanged(int volume);

 private slots:
     void onDataReady();

 private:
     bool readHeader();

 private:
     QIODevice *m_waveDevice;
     QAudioFormat m_fileFormat;
     qint64 m_headerLength;
     QByteArray m_header;
     QAudioOutput* m_audioOutput;
     bool m_headerReadCommited;
     int m_peakThreshold;
     bool m_isPlaying;
     QIODevice* m_audioBuffer;
     QByteArray m_temporaryBuffer;
 };

 #endif
